6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-05 13:26:55 +00:00
Code Issues Projects Releases Wiki Activity

XCore target: Lower FRAME_TO_ARGS_OFFSET

Browse Source 
This requires a knowledge of the stack size which is not known until
the frame is complete, hence the need for the XCoreFTAOElim pass
which lowers the XCoreISD::FRAME_TO_ARGS_OFFSET instrution into its
final form.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198614 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Robert Lytton
2014-01-06 14:21:00 +00:00
parent 12ad7cd730
commit af74cbf553
8 changed files with 128 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Target/XCore/XCoreInstrInfo.td
View File

@@ -56,6 +56,9 @@ def dprelwrapper : SDNode<"XCoreISD::DPRelativeWrapper", SDT_XCoreAddress,
def cprelwrapper : SDNode<"XCoreISD::CPRelativeWrapper", SDT_XCoreAddress,
[]>;
def frametoargsoffset : SDNode<"XCoreISD::FRAME_TO_ARGS_OFFSET", SDTIntLeaf,
[]>;
def SDT_XCoreStwsp : SDTypeProfile<0, 2, [SDTCisInt<1>]>;
def XCoreStwsp : SDNode<"XCoreISD::STWSP", SDT_XCoreStwsp,
[SDNPHasChain, SDNPMayStore]>;
@@ -326,6 +329,11 @@ def ADJCALLSTACKUP : PseudoInstXCore<(outs), (ins i32imm:$amt1, i32imm:$amt2),
[(callseq_end timm:$amt1, timm:$amt2)]>;
}
let isReMaterializable = 1 in
def FRAME_TO_ARGS_OFFSET : PseudoInstXCore<(outs GRRegs:$dst), (ins),
"# FRAME_TO_ARGS_OFFSET $dst",
[(set GRRegs:$dst, (frametoargsoffset))]>;
def LDWFI : PseudoInstXCore<(outs GRRegs:$dst), (ins MEMii:$addr),
"# LDWFI $dst, $addr",
[(set GRRegs:$dst, (load ADDRspii:$addr))]>;